Stormwater

Lopez Airport Swale, Lopez Island, WA

    Scope:
    Design permitting, bidding and construction services for 1,200 LF swale to convey projected 100 year storm peaks from the Airport to the beach, over private properties.

    Description:

  • Utilization of bio-engineered liner, able to convey flows at slopes up to 20% in an open channel.
  • The swale solution negated County requirements for 2 year storm peak reduction using detention pond approaches.
  • Incorporating the swale in the Lopez Airport Safety Improvement Project utilized FAA funding and avoided potential litigation from downstream neighbors.
  • Permitting included an emergency Exemption from Shoreline Substantial Development , with follow-up permitting required, post-construction. Permit follow-up went smoothly.
  • This project was considered practical and successful; a win-win for the Port of Lopez and their neighbors.
Contact Us | ©2008 Boundary Water, Inc.